Russell Brand has just been arrested for allegedly attacking paparazzi at LAX airport ... TMZ has learned, and it was a citizen's arrest.
As we first reported, Brand and Katy Perry were going through Delta security when he allegedly began pushing and striking paparazzi.
We're told a photog -- one of the alleged victims -- made the citizen's arrest and LAX cops facilitated it.
Cops interviewed Brand, then took him into custody. Cops say he's being booked for battery.
tory developing...
UPDATE: Check out this video of another angle of the incident.
VIDEO HERE:
http://www.tmz.com/videos?**********...c-8e8907b3cc16